Cockerell, T.D.A. 1915. New species of Unio from the Tertiary rocks of Wyoming. Bulletin of the American Museum of Natural History 34: 121-126. Available electronically.
Cockerell, 1915. Bull. AMNH 34: 124, fig. 3.
Cockerell, 1915. Bull. AMNH 34: 123, fig. 2.
Cockerell, 1915. Bull. AMNH 34: 122, fig. 1.
Cockerell, 1915. Bull. AMNH 34: 125, fig. 4.